Eusebius’s groundbreaking History of the Church, remains the single most important source for the history of the first three centuries of Christianity and stands among the classics of Western literature. His iconic story of the church’s origins, endurance of persecution, and ultimate triumph—with its cast of martyrs, heretics, bishops, and emperors—has profoundly shaped the understanding of Christianity’s past and provided a model for all later ecclesiastical histories. This new translation, which includes detailed essays and notes, comes from one of the leading scholars of Eusebius’s work and offers rich context for the linguistic, cultural, social, and political background of this seminal text. Accessible for new readers and thought-provoking for specialists, this is the essential text for anyone interested in the history of Christianity.